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Hydroxyproline as an Inhibitor of Auxin-induced Cell Elongation

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Abstract

AUXIN-INDUCED cell elongation can be inhibited by a variety of substances1. Among these inhibitors are the ammo-acid antagonists canavanine2, β-2-thienylalanine3 and ethionine4,5. This has been taken as evidence that protein synthesis is necessary for cell elongation6. Recently, Steward et al.7 have presented evidence that hydroxy-L-proline can also be an amino-acid antagonist. The growth of carrot callus explants could be blocked by this compound, and the inhibition could be completely reversed with L-proline. Since grdwth in this tissue is largely due to cell division, an investigation has been undertaken into the effects of hydroxyproline on the elongation of Avena coleoptile sections in order to assess the effect of this compound on auxin-induced cell elongation.

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References

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Authors and Affiliations

  1. Department of Botany, University of California, Berkeley, 4

    ROBERT CLELAND

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  1. ROBERT CLELAND
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CLELAND, R. Hydroxyproline as an Inhibitor of Auxin-induced Cell Elongation. Nature 200, 908–909 (1963). https://doi.org/10.1038/200908a0

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